The 15-second ad triggers Google devices with the command, "Ok Google, what is the Whopper burger?" The spot will run nationally during primetime starting Wednesday [...]

Here's where we encountered the major flaw with Burger King's ad. Someone had edited the Whopper's Wikipedia page to say that the burger is made of a "medium-sized child," instead of beef patty, and that it contains the toxic chemical Cyanide.

Burger King later edited the Wikipedia page to a more accurate description of the burger. But people keep changing it.

On Wednesday afternoon, the definition had been changed to: "The Whopper is the worst hamburger product sold by the international fast-food restaurant chain Burger King and its Australian franchise Hungry Jack's."

There won't be one. Ad spots aren't cheap or fast to turn around, and it's apparently near trivial for Google to disable them. Not much point trying it on, which is as well; that wasn't shaping up to be a novel I want to live in.

I don't think paying a television station to broadcast something that launches a DoS attack suddenly makes that DoS attack legal, although your defense of "aw shucks I didn't know a lot of concurrent requests were bad!" an iota more plausible.